you can see the pivotal role that she played in the presidential campaign of her husband, john quincy adams, and her complex relationship with her mother-in-law, former first lady abigail adams. first ladies: influence and image, continues tonight live at 9 p.m. eastern on c-span and c-span3, also on c-span radio and c-span.org. >> the winners have been selected in this year's c-span student documentary competition on the theme "your message to the president." the grand prize winner is josh stokes from daniel hand high school many connecticut. his video was on unemployment in america. high schooler alan shimp of pennsylvania won first prize her his industry on the economy and spending. and a group from knoxville won first prize with their documentary on public transportation. watch the winning videos each day next month on c-span and see all the documentaries at student cam.org. >> "the communicators" winds up its visit to ces international 2013, the consumer electronics show in las vegas, with a look at several booths to see some of the technology that's being unveiled this year. >>